Title:
WALL-ARRANGED GIANT RING-SHAPED DIRECT-CURRENT PULVERIZED COAL BURNER
Document Type and Number:
WIPO Patent Application WO/2022/028275
Kind Code:
A1
Abstract:
Disclosed is a wall-arranged giant ring-shaped direct-current pulverized coal burner, which comprises burner nozzles arranged on four side furnace walls of a boiler. The burner nozzles on the four side furnace walls form a wall-type tangential circular combustion method in the furnace, and the burner nozzles on each side furnace wall are arranged in a ring by a plurality of small nozzles to form a giant ring-shaped combined nozzle. In the present invention, there are a plurality of small nozzles arranged in a ring on each side furnace wall to form a giant ring-shaped combined nozzle. The giant ring-shaped combined nozzles on the four side furnace walls may form a wall-type tangential circular combustion method in the furnace. Multiple jets in the giant ring-shaped combined nozzle are mutually entrained and supported by the fire-side and back-fire-side jets, which may effectively enhance the stiffness of each jet. Thus, the phenomenon of flame wall brushing caused by the rapid attenuation of jet stiffness is mitigated, and the risk of coking and high temperature corrosion on the heating surface of the furnace is fundamentally reduced.
Inventors:
MIAO ZHENGQING (CN)
LI ZIXIANG (CN)
LI ZIXIANG (CN)
Application Number:
PCT/CN2021/108604
Publication Date:
February 10, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
F23C5/08; F23D1/00; F23C5/24
Foreign References:
| CN111765455A | 2020-10-13 | |||
| CN204213911U | 2015-03-18 | |||
| CN105605563A | 2016-05-25 | |||
| JP2017146077A | 2017-08-24 | |||
| EP0915290A1 | 1999-05-12 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (CN)
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